Excavator chassis

Abstract

The utility model discloses an excavator chassis, and relates to the technical field of excavators. The crawler chassis comprises a chassis body, a wheel carrier welded to one end of the chassis body, a crawler wheel rotationally connected to one end of the wheel carrier, and a crawler sleeving the outer side of the crawler wheel. A connecting lug is fixedly arranged on the inner side of the bottom of the wheel frame, a linkage rod is connected to the bottom of the connecting lug, a supporting rod is rotatably connected to the other end of the linkage rod, auxiliary wheels are distributed on the inner side of the other end of the supporting rod, a damper is rotatably connected to the bottom of the linkage rod, and a buffer spring is fixedly connected to one side of the top end of the linkage rod. Through the arrangement of the linkage rod, the supporting rod, the auxiliary wheel, the damper, the buffer spring and other structures, the position of the auxiliary wheel can be conveniently adjusted in the follow-up movement process of the excavator chassis, then the excavator chassis can be better suitable for different working environments, and the overall practicability is higher.

Description

Technical Field

[0001] This utility model belongs to the field of excavator technology, and in particular relates to an excavator chassis. Background Technology

[0002] An excavator, also known as a digging machine or excavator, is an earthmoving machine that uses a bucket to excavate materials above or below the machine's bearing surface and load them into transport vehicles or unload them at a stockpile. The materials excavated by excavators are mainly soil, coal, silt, and pre-loosened soil and rock. In recent years, the development of construction machinery has been relatively rapid, and excavators have become one of the most important types of construction machinery. The main structural components of an excavator include a power unit, working device, slewing mechanism, control mechanism, transmission mechanism, traveling mechanism, and auxiliary facilities. The traveling mechanism refers to the excavator chassis.

[0003] The connection between the auxiliary wheels and the chassis of existing excavator chassis is mostly fixed. This fixed connection means that the position of the auxiliary wheels cannot be adjusted later, which has certain drawbacks in actual use. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the existing technology, the present invention provides an excavator chassis that can effectively solve the problems of the existing technology.

[0005] To solve the above-mentioned technical problems, this utility model is achieved through the following technical solution:

[0006] This utility model is an excavator chassis, including a chassis body, a wheel frame welded to one end of the chassis body, a track wheel rotatably connected to one end of the wheel frame, and a track sleeved on the outside of the track wheel;

[0007] It also includes: a connecting ear fixed to the bottom inner side of the wheel frame, and a linkage rod connected to the bottom of the connecting ear; a support rod rotatably connected to the other end of the linkage rod; secondary wheels distributed on the inner side of the other end of the support rod; a damper rotatably connected to the bottom of the linkage rod; and a buffer spring fixedly connected to one side of the top of the linkage rod.

[0008] Furthermore, a cylinder is fixedly mounted on the side wall of the support rod, and a connecting frame is connected to the output end of the cylinder, with a positioning rod fixedly mounted on the side wall of the connecting frame.

[0009] Furthermore, the side wall of the auxiliary wheel is rotatably connected to a bearing seat, and the bearing seat has a positioning hole on its periphery.

[0010] Furthermore, the linkage rod is rotatably connected to the wheel frame via a connecting lug, and the linkage rod is symmetrically distributed along the vertical center line of the wheel frame.

[0011] Furthermore, the two ends of the damper are rotatably connected to the bottom of the linkage rod and the inner side wall of the wheel frame respectively through connecting ears, and the dampers are symmetrically distributed on the inner side of the bottom of the wheel frame.

[0012] Furthermore, the positioning rods are equidistantly distributed along the center point of the connecting frame, and the outer diameter of the positioning rods is adapted to the inner diameter of the positioning holes.

[0013] This utility model has the following beneficial effects:

[0014] 1. This utility model, through the design of linkage rod, support rod, auxiliary wheel, damper and buffer spring, can facilitate the adjustment of the auxiliary wheel position during the movement of the excavator chassis, thereby making it more suitable for different working environments and improving its overall practicality.

[0015] 2. This utility model, through its cylinder, connecting frame, positioning rod, and positioning hole structure, facilitates the quick disassembly and installation of the auxiliary wheel. Compared with existing methods of connection using bolts, it is not only easier to disassemble but also eliminates the need for auxiliary tools, resulting in greater overall flexibility. Attached Figure Description

[0016] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0017] Figure 1 This is a schematic diagram of the present invention;

[0018] Figure 2 This is a schematic diagram of the cross-section of the wheel frame of this utility model;

[0019] Figure 3 This is a side view of the support rod of this utility model;

[0020] Figure 4 This is a bottom view of the chassis body of this utility model.

[0021] The attached diagram lists the components represented by each number as follows:

[0022] 1. Chassis body; 2. Wheel frame; 3. Track wheel; 4. Track; 5. Connecting lug; 6. Linkage rod; 7. Support rod; 8. Secondary wheel; 9. Damper; 10. Buffer spring; 11. Cylinder; 12. Connecting frame; 13. Positioning rod; 14. Bearing seat; 15. Positioning hole. Detailed Implementation

[0023] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0024] Please see Figure 1-4 As shown, this utility model is an excavator chassis, including a chassis body 1, a wheel frame 2 welded to one end of the chassis body 1, a track wheel 3 rotatably connected to one end of the wheel frame 2, and a track 4 sleeved on the outside of the track wheel 3.

[0025] It also includes: a connecting ear 5 fixedly provided on the inner side of the bottom of the wheel frame 2, and a linkage rod 6 connected to the bottom of the connecting ear 5. One end of the linkage rod 6 is rotatably connected to the top inner side of the wheel frame 2 through the connecting ear 5, and the other end is rotatably connected to the support rod 7 through the connecting ear 5. The other end of the linkage rod 6 is rotatably connected to the support rod 7, and a secondary wheel 8 is distributed on the inner side of the other end of the support rod 7. The end of the support rod 7 away from the secondary wheel 8 is rotatably connected to the wheel frame 2 through a rotating shaft. A damper 9 is rotatably connected to the bottom of the linkage rod 6. The two ends of the damper 9 are rotatably connected to the bottom of the linkage rod 6 and the inner side wall of the wheel frame 2 through the connecting ear 5, respectively. A buffer spring 10 is fixedly connected to one side of the top of the linkage rod 6. The two ends of the buffer spring 10 are fixedly connected to the upper surface of the top of the linkage rod 6 and the top of the inner cavity of the wheel frame 2, respectively.

[0026] During operation, the chassis body 1 is connected to the excavator. The rotation of the track wheels 3 then moves the tracks 4, facilitating subsequent adjustment of the chassis body 1's position. The movement of the tracks 4 also drives the auxiliary wheels 8 to rotate, further assisting their movement. When the chassis body 1 traverses rough or uneven terrain, the tracks 4 compress the auxiliary wheels 8. Under this pressure, the auxiliary wheels 8 push the support rod 7, causing one end of the support rod 7 to rotate around the inner wall of the wheel frame 2 via an axle. This rotation of the support rod 7 further pushes one end of the support rod through the connecting... The connecting rod 6 is rotated through the ear 5, and the other end of the connecting rod 6 rotates around the top of the inner cavity of the wheel frame 2 through the connecting ear 5. When the connecting rod 6 rotates, it will squeeze the buffer spring 10 fixedly connected to its top, so as to deform the buffer spring 10. At the same time, the connecting rod 6 pulls the damper 9 through the connecting ear 5, so as to deform the damper 9. Then, the reaction force generated by the deformation of the damper 9 and the buffer spring 10 is combined to achieve the purpose of buffering and shock absorption. At the same time, the position of the auxiliary wheel 8 can also be adjusted, so that it can better adapt to different environments, with higher overall practicality and wider application range.

[0027] Furthermore, a cylinder 11 is fixedly mounted on the side wall of the support rod 7, and a connecting frame 12 is connected to the output end of the cylinder 11. A positioning rod 13 is fixedly mounted on the side wall of the connecting frame 12. The positioning rod 13 is equidistantly distributed along the center point of the connecting frame 12, and the connecting frame 12 is symmetrically distributed on both sides of one end of the support rod 7. A hole for the positioning rod 13 to pass through is opened on the side wall of one end of the support rod 7.

[0028] During operation, the cylinder 11 will cause the connecting frame 12 to move laterally. At this time, the lateral movement of the connecting frame 12 will adjust the lateral position of the positioning rod 13, which will facilitate the subsequent extension of one end of the positioning rod 13 through the side wall of the support rod 7 into the inner side of the positioning hole 15 to achieve the positioning of the auxiliary wheel 8.

[0029] Furthermore, the side wall of the auxiliary wheel 8 is rotatably connected to a bearing seat 14, and a positioning hole 15 is provided on the periphery of the bearing seat 14. The auxiliary wheel 8 and the bearing seat 14 form a rotatable connection, and the positioning holes 15 are equidistantly distributed along the center point of the bearing seat 14. The inner diameter of the positioning hole 15 is adapted to the outer diameter of the positioning rod 13.

[0030] During operation, the auxiliary wheel 8 is engaged with the opening at one end of the support rod 7 via the bearing seats 14 symmetrically arranged on both sides. Then, the position of the positioning hole 15 and the position of the positioning rod 13 are aligned on the same horizontal line, which facilitates the subsequent insertion of the positioning rod 13 into the inner side of the positioning hole 15, thereby realizing the installation between the auxiliary wheel 8 and the support rod 7.

[0031] Furthermore, the linkage rod 6 is rotatably connected to the wheel frame 2 via the connecting lug 5, and the linkage rod 6 is symmetrically distributed along the vertical center line of the wheel frame 2;

[0032] When in operation, the linkage rod 6 will rotate around the wheel frame 2 through the connecting ear 5 when subjected to force, which facilitates the subsequent deformation of the damper 9 and the buffer spring 10.

[0033] Furthermore, the two ends of the damper 9 are rotatably connected to the bottom of the linkage rod 6 and the inner side wall of the wheel frame 2 respectively through the connecting lugs 5, and the dampers 9 are symmetrically distributed on the inner side of the bottom of the wheel frame 2.

[0034] During operation, since the damper 9 is rotatably connected to the linkage rod 6 and the wheel frame 2 through the connecting lug 5, when the linkage rod 6 moves along the wheel frame 2, it will press down the damper 9 rotatably connected to its bottom, thereby deforming the damper 9. This allows the subsequent use of the deformation of the damper 9 to assist in the position adjustment of the auxiliary wheel 8, and also serves as a buffer.

[0035] Furthermore, the positioning rods 13 are equidistantly distributed along the center point of the connecting frame 12, and the outer diameter of the positioning rods 13 is adapted to the inner diameter of the positioning holes 15;

[0036] During operation, since the size of the positioning rod 13 is adapted to the inner side of the positioning hole 15, when the connecting frame 12 drives the positioning rod 13 to move laterally so that one end is input into the inner side of the positioning hole 15, it is convenient to perform subsequent positioning processing on the auxiliary wheel 8 and realize the rapid installation of the auxiliary wheel 8.

[0037] Working principle: The chassis body 1 is connected to the excavator. Then, the auxiliary wheel 8 is rotatably connected to the inner side of one end of the support rod 7 via the bearing seat 14. Subsequently, the track wheel 3 rotates to realize the movement of the track 4. The movement of the track 4 facilitates the subsequent adjustment of the position of the chassis body 1. When the track 4 moves, it will drive the auxiliary wheel 8 to rotate as well, thus assisting the movement of the track 4. When the chassis body 1 passes through relatively rough and rugged ground, the track 4 will squeeze the auxiliary wheel 8. At this time, the auxiliary wheel 8 will push the support rod 7 under the action of the track, causing one end of the support rod 7 to rotate around the inner wall of the wheel frame 2 via the axle. When rotating, it pushes the linkage rod 6, which is rotatably connected to one end through the connecting ear 5, and causes the other end of the linkage rod 6 to rotate around the top of the inner cavity of the wheel frame 2 through the connecting ear 5. At the same time, the linkage rod 6 compresses the buffer spring 10 fixedly connected to its top end, causing the buffer spring 10 to deform. Meanwhile, the linkage rod 6 pulls the damper 9 through the connecting ear 5, causing the damper 9 to deform. The combined reaction force generated by the deformation of the damper 9 and the buffer spring 10 serves the purpose of buffering and shock absorption. It can also adjust the position of the auxiliary wheel 8, making it more adaptable to different environments. Overall, it has higher practicality and a wider range of applications.

[0038] The above are merely preferred embodiments of the present utility model and do not limit the present utility model. Any modifications, equivalent substitutions, or improvements made to the technical solutions described in the foregoing embodiments, or to some of the technical features, shall fall within the protection scope of the present utility model.

Claims

1. An excavator chassis, comprising a chassis body (1), a wheel frame (2) welded to one end of the chassis body (1), a track wheel (3) rotatably connected to one end of the wheel frame (2), and a track (4) sleeved on the outside of the track wheel (3). Its features are, Also includes: A connecting ear (5) is fixedly provided on the inner side of the bottom of the wheel frame (2), and a linkage rod (6) is connected to the bottom of the connecting ear (5). A support rod (7) is rotatably connected to the other end of the linkage rod (6), and a secondary wheel (8) is distributed on the inner side of the other end of the support rod (7). A damper (9) is rotatably connected to the bottom of the linkage rod (6), and a buffer spring (10) is fixedly connected to one side of the top of the linkage rod (6).

2. The excavator chassis according to claim 1, characterized in that, A cylinder (11) is fixedly mounted on the side wall of the support rod (7), and a connecting frame (12) is connected to the output end of the cylinder (11). A positioning rod (13) is fixedly mounted on the side wall of the connecting frame (12).

3. The excavator chassis according to claim 2, characterized in that, The side wall of the auxiliary wheel (8) is rotatably connected to a bearing seat (14), and a positioning hole (15) is provided on the periphery of the bearing seat (14).

4. The excavator chassis according to claim 1, characterized in that, The linkage rod (6) is rotatably connected to the wheel frame (2) through the connecting lug (5), and the linkage rod (6) is symmetrically distributed along the vertical center line of the wheel frame (2).

5. An excavator chassis according to claim 1, characterized in that, The two ends of the damper (9) are connected to the bottom of the linkage rod (6) and the inner wall of the wheel frame (2) respectively through the connecting lug (5), and the damper (9) is symmetrically distributed on the inner side of the bottom of the wheel frame (2).

6. An excavator chassis according to claim 3, characterized in that, The positioning rods (13) are equidistantly distributed along the center point of the connecting frame (12), and the outer diameter of the positioning rods (13) is adapted to the inner diameter of the positioning holes (15).

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